Volume 28, Number 4, June 2000MS for the study of natural mechanisms
|Page(s)||330 - 335|
Suitability of different plastic materials for head or nose spaces short term storageJ. Pet'ka1, P. Étievant2 and G. Callement2
1 Food research institute, Priemyselná 4, 824 75 Bratislava, Slovakia
2 INRA, Laboratoire de recherches sur les arômes, 17, rue Sully, BP 86510, 21065 Dijon Cedex, France
(Received January 21, 2000; revised June 9, 2000; accepted July 4, 2000.)
Three types of plastic material (Saran, Tedlar and Teflon) were examined for their influence on the profile of a model headspace containing 13 volatile compounds of different volatility and polarity. As far as the emission of contaminants from the bags to the headspace is considered, the most appropriate material is obviously Teflon. However, the drawback of this material is a rapid sorption and then a slow adsorption of most volatile compounds tested, in particular polar ones. The authors suggest that acceptable time for headspace storage is between 4 and 12 hours, but with possible loss of the most polar compounds present in trace quantities.
Key words: Plastic materials -- flavour compounds -- short term storage -- head space.
© EDP Sciences, Wiley-VCH 2000